Description of problem:

In a cluster with 0 existing MulticlusterRoleAssignments and role assignment Placements, I get this error when trying to create a global access role assignment:

This should use global placement, which is active and working:

mjs@dfaea40f6f5f:/UbuntuSync$ oc get placement -A
NAMESPACE                            NAME                         SUCCEEDED   REASON                  SELECTEDCLUSTERS
open-cluster-management-global-set   global                       True        AllDecisionsScheduled   4
open-cluster-management-global-set   placement-policy-virt-rbac   True        AllDecisionsScheduled   2
open-cluster-management              openshift-cnv                True        AllDecisionsScheduled   4
open-cluster-management              openshift-mtv                True        AllDecisionsScheduled   1

Version-Release number of selected component (if applicable): 2.16.0-185

How reproducible: always

Steps to Reproduce:

1. Delete all existing MulticlusterRoleAssignments
2. Delete all previously created role assignment Placements
3. Try to create a global access role assignment

Actual results:

Has error.

Expected results:

Should be successful. Should use global Placement which exists by default.

Additional info: